to get us energized for the school day. and some sugar is okay, but too big a spoonful of sugar could make the grades go down. >> we'll be back with more "teen kids news" in just a few moments. >> stick with us. >> long, long before there was this... and even long, long before there was this... there was this. [ men chanting ] more than a thousand years ago, monks labored lovingly to create manuscripts -- the books of the medieval ages. made by hand, they were also works of art. the pages are so brilliantly decorated, they seem to give off light. that's why these are called illuminated manuscripts. that old craft comes to life again at manhattan's morgan library and museum. the morgans were famous bankers, and they were passionate about books. >> so, officially, welcome now to mr. morgan's library. i want to take us right away, actually, into mr. morgan's reading room, which is the room with the majority of the books, the majority of his 15,000 books. >> these students are part of an educational program run by the library.